一、目前进展 1.Android已经可以通过NFS在FS2410开发板上运行 二、目前缺陷 1.触摸屏没有校准 2.Android中时钟停止,结束zygote进程,系统重启,时钟更新,但再次停止不动 3.串口无法与GPRS模块通讯 三、移植步骤 一、移植Android内核到FS2410开发板上 1、从http://code.google.com/p/android/downloads/list上下载linux-2.6.25-android-1.0_r1.tar.gz
2、将内核解压到用户目录,如/home/wangan/kernel.git
3、进入kernel.git文件夹,如cd ~/kernel.git/
4、修改arch/arm/plat-s3c24xx/common-smdk.c文件中的nand flash分区设置,如gedit arch/arm/plat-s3c24xx/common-smdk.c 修改static struct mtd_partition smdk_default_nand_part[]结构体为: static struct mtd_partition smdk_default_nand_part[] = { [0] = { .name = "Boot Agent", .size = SZ_256K, .offset = 0, }, [1] = { .name = "Linux Kernel", .offset = SZ_256K, .size = SZ_2M - SZ_256K, }, [2] = { .name = "File System", .offset = SZ_2M, .size = SZ_32M - SZ_2M, }, [3] = { .name = "Other", .offset = SZ_32M, .size = SZ_32M, } };
5、在http://www.codesourcery.com/gnu_toolchains/arm/portal/release644网站上下载IA32 GNU/Linux TAR。
6、将文件解压到用户目录,如/home/wangan/arm-2008q3
7、进入arm-2008q3/bin文件夹,如cd ~/arm-2008q3/bin/
8、添加当前路径进入环境变量,如export PATH=$PWD:$PATH,或修改~/.bashrc文件并重新登录
9、进入内核文件夹,如cd ~/kernel.git/
10、修改Makefile文件,如gedit Makefile 更改ARCH和CROSS_COMPILE #ARCH ?= $(SUBARCH) ARCH ?= arm #CROSS_COMPILE ?= arm-eabi- CROSS_COMPILE ?= arm-none-eabi-
11、从华清远见Linux-2.6.8.1内核压缩包中提取.config文件(注意:config前面有个“.”)放入kernel.git文件夹
12、运行make menuconfig (1) 确保System Type ---> ARM system type ()中的内容为Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443 (2) 确保System Type ---> S3C2410 Machines ---> [*] SMDK2410/A9M2410被勾选 (3) 取消选择与Goldfish相关的内容 Device Drivers ---> Character devices ---> < > Goldfish TTY Driver Device Drivers ---> Power supply class support ---> < > Goldfish battery driver (NEW) Device Drivers ---> Real Time Clock ---> < > GOLDFISH (NEW) Device Drivers ---> Graphics support ---> Support for frame buffer devices ---> < > Goldfish Framebuffer (4) 选择S3C2410 LCD相关的内容 Device Drivers ---> Graphics support ---> Support for frame buffer devices ---> <*> S3C2410 LCD framebuffer support Device Drivers ---> Graphics support ---> [*] Bootup logo ---> [*] Standard black and white Linux logo Device Drivers ---> Graphics support ---> [*] Bootup logo ---> [*] Standard 16-color Linux logo Device Drivers ---> Graphics support ---> [*] Bootup logo ---> [*] Standard 224-color Linux logo (5) 选中Android内核必须选项 Kernel Features ---> [*] Use the ARM EABI to compile the kernel General setup ---> [*] Use full shmem filesystem General setup ---> [*] Enable Android's Shared Memory Subsystem System Type ---> [*] Support Thumb user binaries Device Drivers ---> Android ---> [*] Android log driver Device Drivers ---> Android ---> <*> Binder IPC Driver (6) 尽量选中Android内核可选选项 Device Drivers ---> Android ---> [*] RAM buffer console Device Drivers ---> Android ---> [*] Android timed gpio driver Device Drivers ---> Android ---> [*] Only allow certain groups to create sockets (7) 其余CONFIG选项,如系统支持请一并选择 CONFIG_ANDROID_POWER =y CONFIG_ANDROID_POWER_STAT =y CONFIG_ANDROID_POWER_ALARM =y (可以在Kconfig文件中查找ANDROID_POWER等字段进行选择,或者直接修改.config文件)
13、退出并保存.config 二、移植LCD驱动到Linux-2.6.25内核 1、 进入kernel.git文件夹,如cd ~/kernel.git/ 2、 修改arch/arm/mach-s3c2410/mach-smdk2410.c文件,如gedit arch/arm/mach-s3c2410/mach-smdk2410.c (1) 增加头文件#include <asm/arch/fb.h> (2) 增加两给结构体 static struct s3c2410fb_display smdk2410_lcd_cfg __initdata = { .lcdcon5 = S3C2410_LCDCON5_FRM565 | S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME | S3C2410_LCDCON5_PWREN | S3C2410_LCDCON5_HWSWP, .type = S3C2410_LCDCON1_TFT, .width = 320, .height = 240, .pixclock = 174757, .xres = 320, .yres = 240, .bpp = 16, .left_margin = 16, .right_margin = 59, .hsync_len = 9, .upper_margin = 2, .lower_margin = 6, .vsync_len = 16, };
static struct s3c2410fb_mach_info smdk2410_fb_info __initdata = { .displays = &smdk2410_lcd_cfg, .num_displays = 1, .default_display = 0, .gpccon = 0xaa955699, .gpccon_mask = 0xffc003cc, .gpcup = 0x0000ffff, .gpcup_mask = 0xffffffff, .gpdcon = 0xaa95aaa1, .gpdcon_mask = 0xffc0fff0, .gpdup = 0x0000faff, .gpdup_mask = 0xffffffff, .lpcsel = 0xf82, }; (3) 在smdk2410_init()函数中增加s3c24xx_fb_set_platdata(&smdk2410_fb_info); 三、移植触摸屏驱动到Linux-2.6.25内核(参见《基于linux-2.26.5内核的FS2410开发板触摸屏驱动移植》)并制作zImage文件,如make 这里提一下,确保已经勾选Device Drivers ---> Input device support ---> <*> Event interface,本人曾经在这里徘徊,感谢游老师悉心教诲! 四、制作支持ARMv4的Android根文件系统 1、从http://www.rayfile.com/files/d4660882-de04-11dd-af0d-0014221b798a/下载Android的ARMv4版本根文件 2、在/dev下增加null和console两个设备节点 mknod -m 660 null c 1 3 mknod -m 660 console c 5 1 3、在U-boot中修改启动参数init为/init,完整的命令行如:root=nfs nfsroot=169.254.7.118:/source/rootfs ip=169.254.7.119 console=ttySAC0,115200 init=/init 4、修改/init.rc文件,去除除mount tmpfs tmpfs /sqlite_stmt_journals size=4m之外的所有mount命令 系统制作完成,现在应该可以看到漂亮的大表了。首次启动需要创建文件,大约17分钟。然后每次启动只需要2分钟。
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